Articles tagged with Air Quality
The effects of Asian pollution on US air quality can be dramatic, raising health issues for those with respiratory problems. Small particulates as small as 10 microns can pass through the nose and into the respiratory system, causing noticeable health effects.
Scientists report that ozone standards set by EPA may be weaker than necessary due to overestimated background levels. Using a three-dimensional model of atmospheric chemistry, researchers found great variability in ozone depending on season, elevation, and geographic area.
The project will model air quality in the US, factoring in climate-driven changes, wildfires, and land use shifts. Researchers aim to better understand how future climate may impact urban and regional air quality.
Researchers investigated the impact of a building demolition on air quality and found that airborne dust concentrations were extremely high in immediate vicinity and downwind areas. Spectators are advised to stay upwind and indoors to avoid exposure to high levels of particulate matter.
Researchers examining the link between cabin air quality and health will collect data from a sample of flights, recording cabin air quality and perceptions of comfort and health by flight attendants and passengers. The study aims to inform the development of air quality standards for commercial aircraft.
Research aims to determine if indoor air quality in classrooms affects children's health and academic performance. The study will examine the effects of improved ventilation, temperature control, and reduced airborne pollutants on students.
Researchers found a 0.5% increase in cardiovascular deaths and 2% increase in respiratory problems four days after stagnant air, confirming guidelines for people with pulmonary disease. The study used 28 years of weather data to analyze mortality rates and provided insight into the relationship between air stagnation and health outcomes.
A Rice University study found that diesel engines are the primary contributors of fine particles to Houston's air, followed by gasoline-powered vehicles and road dust. The researchers also discovered that fuel oil combustion from industrial plants produced significant amounts of particulate matter.
Scientists from PNNL are conducting a multi-organization study to gather first-of-its-kind air chemistry data essential to effectively address regional air quality problems such as ozone and microscopic atmospheric particles. The study aims to capture the distribution, transport, and formation of these pollutants in the atmosphere.
A CU-Boulder study found that Denver-area drivers are largely unaware of the impact of air-quality advisories on their transportation habits, despite being aware of the advisories themselves. The study suggests possible alternatives to mitigate the problem, such as subsidizing public transit passes and improving cycling infrastructure.
A recent field study found that use of ethanol fuels leads to increased levels of toxins called aldehydes and peroxyacyl nitrates (PAN), which can last for many days in the air. PAN is highly toxic to plants and a powerful eye irritant, posing health and environmental risks.
Environmental scientists have developed an internet-based chat room to analyze ozone levels, enabling policymakers to make informed decisions. The site provides real-time data and interactive tools, helping researchers better understand the regional nature of ozone transport.